This adds `lean.h.bc`, a LLVM bitcode file of the Lean
runtime that is to be inlined. This is programatically generated.
1. This differs from the previous `libleanrt.ll`, since it produces an
LLVM bitcode file, versus a textual IR file. The bitcode file
is faster to parse and build an in-memory LLVM module from.
2. We build `lean.h.bc` by adding it as a target to `shell`,
which ensures that it is always built.
3. We eschew the need for:
```cpp
```
which causes breakage in the build, since changing the meaning of
`static` messes with definitions in the C++ headers.
Instead, we build `lean.h.bc` by copying everything in
`src/include/lean/lean.h`, renaming `inline` to
`__attribute__(alwaysinline)` [which forces LLVM to generate
`alwaysinline` annotations], then running the `-O3` pass pipeline
to get reasonably optimised IR, and will be perfectly inlined
when linked into the generated LLVM code by
`src/Lean/Compiler/IR/EmitLLVM.lean`.
Co-authored-by: Sebastian Ullrich <sebasti@nullri.ch>
I guess CMake might not actually be that painful if one was motivated to
learn it
```
sed -Ei 's/set\(([A-Z_]+) "\$\{\1\}/string(APPEND \1 "/' src/**/CMakeLists.txt
```
* fix msys2 windows build so the windows apps support utf-8 file paths.
* use windres to compile default-manifest.o
* windres is in binutils.
* stop modifying default-manifest.o
* copy to stage0
* fix semicolon joining of lists in add_custom_target
* undo changes to stage0 as per CR feedback.
* fix makefile
* fix: revert cmakelists.txt COMMAND_EXPAND_LISTS change
* fix: msys2 dependencies
* add unit test for decoding UTF-8 chars to prove "lean.exe" can read utf-8 encoded files where utf-8 is also used in the file name.
* fix: utf-8 test by using windows-2022
* fix: do we really need cmake 3.11 or will 3.10 do?
* nope, really does require cmake 11.
New test demonstrates how to use them.
The user-defined extensions cannot be used in the same file where they
were declared because the `initialize` commands are only executed when
we import the modules containing them.
TODO: user-defined attributes.
